COS is not available if a Sun Enterprise xx00 server lacks enabling firmware. In this case, the system displays the following messages during the boot sequence:
WARNING: Firmware does not support CPU power off WARNING: Automatic CPU shutdown on over-temperature disabled WARNING: Firmware does not support CPU restart from power off WARNING: The ability to restart individual CPUs is disabled
When equipped with the proper firmware, the system displays the following during the boot sequence. Later firmware will show a similar output..
Board 0: OBP 3.2.8 1997/02/27 14:00 POST 3.5.1 1997/03/05 09:34